1.
vb. [Geophysics]
To perform a
convolution, which is a mathematical operation on two functions that is the most general representation of the process of linear (invariant) filtering. Convolution can be applied to any two functions of time or space (or other variables) to
yield a third function, the output of the convolution. Although the mathematical definition is symmetric with respect to the two input functions, it is common in
signal processing to say that one of the functions is a
filter acting on the other function. The response of many physical systems can be represented mathematically by a convolution. For example, a convolution can be used to
model the filtering of
seismic energy by the various
rock layers in the Earth;
deconvolution is used extensively in seismic processing to counteract that filtering.